Abstract
Myogenin immunostaining has been described as a useful marker of the alveolar subtype of rhabdomyosarcoma and as a tool for distinguishing it from the more common embryonal subtype. To add to the growing body of literature describing this phenomenon we analysed myogenin immunohistochemical staining in 152 tumors using a rhabdomyosarcoma tissue array. Results were analysed blinded to histological type by two independent investigators. Samples were excluded if any samples failed to stain with desmin and/or myogenin. Mean percentage of myogenin positive cells was significantly greater for ARMS (n = 31; mean percentage positivity 59% (95% confidence intervals ± 7%) than ERMS (n = 41, mean percentage positivity 16%, 95% confidence intervals ± 4; P < 0.0001). This data is consistent with previously published studies identifying strong nuclear myogenin staining in a high proportion of cells as a marker of alveolar histology.
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John Anderson’s work is supported by a Clinician Scientist Fellowship from Cancer Research UK.
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Morgenstern, D.A., Rees, H., Sebire, N.J. et al. Rhabdomyosarcoma Subtyping by Immunohistochemical Assessment of Myogenin: Tissue Array Study and Review of the Literature. Pathol. Oncol. Res. 14, 233–238 (2008). https://doi.org/10.1007/s12253-008-9012-5
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DOI: https://doi.org/10.1007/s12253-008-9012-5